Skeletal studies show that the mole’s thumb forms from an elongated wrist bone, explaining why, unlike true digits, which have multiple parts, the pseudo-thumb consists of a single, bladelike bone.
wrist bone, explaining why, unlike true digits, which have multiple parts, the pseudo-thumb consists
wrist bone, a formation that explains why, unlike true digits, which have multiple parts, the pseudo-thumb consists
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A 中 explaning应该修饰的是 that the mole’s thumb forms from an elongated wrist bone,这个fact呀?
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